Bud Walen Aviation Piper PA-44-180 incident
Piper PA-44-180 and Air California McDonnell Douglas DC-9 · Incident: near collision between aircraft on approach
Event
- NTSB case
- LAX85IA175
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Incident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Airline
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Aircraft 1 · Piper PA-44-180
- Aircraft type
- Piper PA-44
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N2138G
- Operator
- Bud Walen Aviation
- Onboard fatalities
- Unknown
- Route
- From Van Nuys Airport (VNY), Van Nuys, CATo not recorded
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Approach · IFR initial approach
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Near collision between aircraft
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- None
Aircraft 2 · McDonnell Douglas DC-9
- Aircraft type
- McDonnell Douglas DC-9
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N476AC
- Operator
- Air California
- Onboard fatalities
- Unknown
- Route
- From John Wayne Orange County International Airport (SNA), Santa Ana, CATo not recorded
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 121: Air Carrier
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Approach · IFR initial approach
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Near collision between aircraft
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- None
Cause areas
- Atc personnel(dep/apch) › Improper decision
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
A PIPER SEMINULE WAS VECTORED TO THE FINAL APCH COURSE & CLEARED FOR AN ILS APCH AT 3000FT MSL. A DC-9, IN TRAIL AT 5000 FT MSL, WAS OVERTAKING THE SEMINULE. THE CONTROLLER ELECTED TO CHANGE THEIR SEQUENCE & CLEARED THE SEMINULE TO CLIMB TO 4000FT MSL DUE TO RISING TERRAIN & MAKE A RIGHT 360. THE DC-9 WAS SUBSEQUENTLY ISSUED AN APPROACH CLEARANCE & DESCENT FROM 5000FT, WHICH COMPROMISED SEPA4RATION REQUIREMENTS. THE CONFLICT ALERT WAS MISSED, IN PART BECAUSE IT WAS IDENTICAL WITH THE TERRAIN PROXIMITY ALERT, WHICH SOUNDED FREQUENTLY.
Verbatim NTSB analysis from the NTSB dataset
Sources
NTSB record LAX85IA175
- Event ID
- 20001214X35949
- Case number
- LAX85IA175
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: local date, investigation status, damage. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 1985-03-16.
- API snapshot SHA-256: 5cbb78b90283bc6f3b73f457b79eb43583e524a994c00655315ebe55025ecf7f; retrieved 2026-09-18T20:29:58.233Z.